Terminal Velocity and Viscometer Principle Quiz
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Questions and Answers

What principle does a photocell work on?

  • Principle of interference
  • Principle of symmetry
  • Principle of photoelectric effect (correct)
  • Principle of diffraction

    • Which phenomenon is associated with the wave nature of light?

  • Polarization (correct)
  • Dual Nature of Matter
  • Photoelectric effect
  • Compton scattering

    • What is the de Broglie wavelength associated with?

  • Diffraction
  • Photoelectric effect
  • Gravity
  • Protons (correct)

    • Who suggested that moving particles should be associated with de Broglie waves?

    <p>de Broglie</p> Signup and view all the answers

    Which experiment confirmed the existence of de Broglie waves associated with electrons?

    <p>Davison and Germer Experiment</p> Signup and view all the answers

    What does a photocell convert light energy into?

    <p>Electric energy</p> Signup and view all the answers

    What is the formula for Compton shift, the difference in wavelength of scattered and incident photons?

    <p>$h \Delta \lambda = (1 - \cos \phi) m_0c$</p> Signup and view all the answers

    In J.J. Thomson's experiment to determine the velocity and charge-to-mass ratio of cathode rays, what is the equation representing the forces due to electric and magnetic fields?

    <p>$eE = Bev$</p> Signup and view all the answers

    What does Milliken's Oil Drop Method determine?

    <p>Charge on the electron</p> Signup and view all the answers

    Which formula is used to calculate the radius of an oil drop in Milliken's Oil Drop Method?

    <p>$r = \frac{2(\rho - \sigma)g}{\eta v_0}$</p> Signup and view all the answers

    What does J.J. Thomson's experiment aim to determine?

    <p>Velocity and charge-to-mass ratio of cathode rays</p> Signup and view all the answers

    Which field is perpendicular to the direction of motion of cathode rays in J.J. Thomson's experiment?

    <p>Electric field</p> Signup and view all the answers

    What is the formula for the maximum kinetic energy of photoelectrons emitted from a metal surface?

    <p>$K_{max} = eV_o = h\nu - \phi_o$</p> Signup and view all the answers

    What principle gives the de Broglie wavelength associated with a particle of momentum?

    <p>de Broglie Hypothesis</p> Signup and view all the answers

    In the context of electron microscopy, what is the significance of accelerating electron beams?

    <p>To enhance the resolution of the microscope</p> Signup and view all the answers

    What is the relationship between the Heisenberg Uncertainty Principle and position-momentum uncertainties?

    <p>$\Delta x \cdot \Delta p = h / 2\pi$</p> Signup and view all the answers

    What does the work function of a metal surface represent?

    <p>The energy required to remove an electron from the metal surface</p> Signup and view all the answers

    How is the de Broglie wavelength related to the momentum of a particle?

    <p>$\lambda = \frac{h}{mv}$</p> Signup and view all the answers

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